Weft stop-motion for looms



(No Model.) 2 Sheets-Sheet 1.

P. LAOBY.

WEPT STOP MOTION FOR LOOMS.

Patented Sept. 22, 1891.

//V V /V TOR 22 4 7 WITNESSES 1* Nouns warns cim, PHWO-LITmL, wAsmMaTan,n. c.

2 MW 8 h S q t e 8 h S 2 Y E O A L F (No Model.)

WEFT STOP MOTION F03 LOOMS.

Patented Sept. 22, 1891.

IN VE N TOR.

WITNESSES;

UNITED STATES PATENT OFFICE.

FRED IAGEY, OF ADAMS, MASSACHUSETTS.

WEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 459,841, datedSeptember 22, 1891. Application filed Novemher t 1890- Serial No,370.465. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRED LACEY, of Adams, in the county of Berkshire andState of Massachusetts, have invented certain new and usefulImprovements in lVeft Stop-Motions for Looms; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

This invention consists of improvements in that division of loommechanism classed as weft stop-motions, comprising devices forautomatically stopping a loom when the filling-thread breaks or runsout. It is fully illustrated in the accompanying drawings.

Figure 1 represents a top view of a part of a lathe and breast-beam of aloom with the stop-motion devices attached thereto. Fig. 2 shows a frontelevation of the portion of the lathe and devices on it seen in Fig. 1.Figs. 3, 4t, and 5 are separate views of some of the parts of themechanism shown in Figs. 1 and 2, which will be distinguished by theletters marked on them. Fig. 6 shows a section of a lathe with itsWeft-motion devices, taken on line :0 ac, Fig. 1. Fig. 7 shows theweft-feeler block and feeler in different positions. Fig. 8 shows howthe improvement is applied to another form of shipper-cast-ofi mechanismusing a rocking rod. Fig. 9 is a front elevation of the breast-beam andpartsseen in Fig. 8. Fig. 10 represents the improvement adapted tooperate a shipper cast-off having a horizonal lever. Fig. 11 is a frontelevation of the parts shown in Fig. 10. Fig. 12 shows a modification ofthe weft-stop mechanism to operate a shipper-cast-off mechanism alreadyusing a shuttle-binder stop-motion. Fig. 13 is a vertical section of thebreastbeam and parts, taken on line 2 2, Fig. 12. Fig. 14 shows anelevation of part of the lathe, with said modification of thecasting-off device. Fig. 15 is a cross-section of the lathe, showingsaid modification with the horizontal stud on the front, which operatesthe cast-0E.

In Fig. I of the drawings the breast-beam A is drawn in dotted lines intop views, that the relative position of the mechanism on its underside, which is shown in full lines, may

be easily understood.

B is a part of the lathe, to the front side of which the other parts ofthe stop mechanism are attached, which consist of a plate a, made faston the front of the lathe and having a plate e, secured to its front bymeans of screws passing through slots-in the plate and leaving the platee with freedom to slide endwise on the face of the plate a. The plate ehas a recess e made in its upper side, one side of the recess being cutin square to the upper side of the plate and the other side inclined, soas to rise gradually up out of the recess to the outer edge of theplate. The plate a, has two ears projecting on its upper side to furnishbearings for the pivot of the weft-feeler block cl to vibrate in. Thisblock 01 extends down far enough to pass into the recess 6' in the plate6 when the feelers c are clear downthat is, the forward part of itmarked d. The plate 6 has a stud a attached to its lower edge andanother adjustable horizontal stud b projecting out from its face towardthe breast-beam. A bar f is cast or otherwise made fast to the plate a,and extends down and across just back of the stud a, up to the other endof the plate, for the stud a to rest against to prevent the plate e frombeing cramped and hindered in sliding by the pressure of the arm h onthe stud a in sliding the plate. The parts of the stop-motion attachedto the breast-beam A are: the plate h, Fig. 5, which is secured withbolts to the under side and has astud Z extending down from its underside, and the plate j, with a semicircular slot and projection w. on oneside, and the slotted arm h. The last two have holes in them throughwhich the stud Z passes, and a pin through the lower end of the studsecures them. A small bolt g, that passes through the slot in the platej and a hole in the arm h, holds the two together, the slot permittingthe plate j to be set around on the arm, so that the projection 01 canbe put on any side of the arm that may be required. The arm h is placedon the beam A, so as to stand at a slight angle to a line square to theside of the beam, with the stud o. in its slot, and a small close spiralspring '0 has one end secured to the beam and the other to the arm tohold it in position with suflicient force to make the stud in its backand forward movement, in consequence of the lathe-motion, follow theslot and move the plate c back and forward endwise, so long as thatplate is free so to move; but when the plate e is prevented from slidingby the feeler-block d entering into the recess 6, as described, thespring 1 will yield and allow the arm to be moved by the stud and theprojection n to strike against the shipper-oast-oif rod orlever, whichin Fig. 1 consists of a rod 22-, held in hearings on the under side ofthe breast-beam A, and has on one end a notched plate j, which liesunder the shipper-plate Z, also attached to under side of the beam. Theshipper-plate Z is of the usual form, having a long slot for the shipperto slide in and a notch near the end of the beam to catch and hold theshipper if when the loom is started. The rod n has a small dog y,fastened on it in position to be struck by the projection n on the platej when the arm h is pushed back and pushes the rod n and its notchedplate j so that the incline of the notch in the plate will push theshipper t out of the notch that holds it and throw 0% the driving-belt.

In Fig. 6 will be seen the positions of the weft-feelers c. The inclineon one side of the recess e on the plate e, before mentioned, in thesliding back of that plate as the lathe moves out, passing under thelower portion of the block d forward of its pivot, causes it to risewith the feelers to allow the shuttle to pass. As the lathe moves in andthe plate 6 slides back the block and feelers drop, assisted by anoutward swell on the plate 0, pressing against the tail of thefeeler-block at d, and if the weft-thread is intact the feelers willrest on it in the position shown by 0 but if the weft-thread is missingthe feelers will continue to fall to the posit-ion of c, Fig. 7, and thefront lower point of the block (1 will enter the recess in the slidingplate 6 and stop it, causing the inward motion of the lathe to push backthe slotted arm h by the stud a, which will, by means of the projectionn on the plate j and the dog y, throw the rod 72. endwise and cast theshipper out of the notch in the plate Z and stop the loom; but when theweft-thread is in place it will hold the feelers 0 up, so that the pointof the block d will be out of the notch in plate e and that plate willbe free to slide. In fast-running looms the plate 6 is liable to bethrown past the weft-block so quickly that the weft-feeler will not havetime to drop into the recess 6 (when the weft is missing) before thesquare side of the recess will have passed by and thus fail to stop theplate. To obviate this difliculty I curve the free end of the arm it, soas to bring its slot in the part toward its free end less square to theface of the breastbeam, that it may move the stud ct quickly in the lastpart of the lathe-motion in and raise the weft-feelers quickly out ofthe way of the shuttle, and 'as the lathe moves out drop them quickly atfirst but more slowly as the stud approaches the straighter part of theslot, which is made nearly square to the breast-beam, letting thefeelers down easily on the filling-thread to prevent kinking or pressingit down between the warp-thread and causing the stud to move slower andstronger in casting off the shipper if the plate is stopped by the blockfor lack of filling.

The object in arranging and showing the following modes of applying theimprovement to other kinds of shipper-cast-ofl: mechanisms is because agood weft stop-motion is perhaps as much in demand to take the place ofpoor ones in use on looms now in operation as to apply to new looms, andthe more easily it can be made to operate any form of a shipper-motionthat may be already on the loom the less alteration will be necessaryand the chances of its being adopted will be much greater. In Figs. 8and 9 it is shown combined with a rocking rod cast-oil, in which theprojection n on the platej' strikes a dog 7' on the rod and turns it sothat a dog 0' in reverse position on the rod at its end will push theshipper-lever out of its notch. In Figs. 10 and 11 it is shown combinedwith a lever cast-01f, in which the projection 02 on the plate j strikesone end of a horizontal lever m, pivoted to the under side of thebreast-beam, the outer end of the lever pushing the shipper-lever out ofits notch. In Figs. 12 and 13 it is shown in combination with a shuttlestop-motion or with those parts of such a motion as are usually attachedto the breast-beam (the other parts of the motion being omitted in thedrawings for sake of clearness) in casting off the shipper when theshuttle fails to enter its box. In this case the shuttle-arm h is usedto move the sliding plate 6, as before described; but a horizontal studb, adjustable as to length, (see Fig. 15,) is made fast on the face ofthe plate 6 in position to strike against the trip-lever 7a, (which isthe same lever that the dagger of a shuttle cast-off would strike instopping the loom,) when the plate e is stopped by the block cl, andpushes back the inner end of the lever m, causing the outer end of thatlever to push the shipper out of its notch and stop the loom. The stud bis made adjustable by fitting it into the hub on the plate with ascrew-thread, (see Fig. 15,) and a check-nut s is placed on it to holdat any place it may be set.

Having thus described my improvement, I claim as my invention 1. In aweft stop-motion, the breast-beam A, slotted arm h, pivoted thereto, andspringv between the arm h and beam A, in combination with the lathe B,sliding plate 6, attached thereto and having notch e and stud a eugagingthe slot in arm h, the block d, carrying feelers and pivoted to saidlathe, the shipper and a rod or arm engaging therewith and provided witha projection, and means for engaging said projection and moving the rodor arm when the block 01 falls into recess 6, substantially asdescribed.

2. In a weft stop-motion, the breast-beam A, slotted plate j, securedthereto and having projection a, slotted arm h, pivoted to said plate,in combination with the lathe B, sliding plate 6, attached thereto andhaving stud a engaging the slot in arm h, the block d, car rying feelersc and pivoted to said lathe and the shipper, and means between theshipper and plate j for moving the same, substantially as described.

3. In a weft stop-motion, the breast-beam A, the slotted arm h, pivotedthereto and having its outer or free end curved and the spring 1),between the beam and arm h, in combination'with the lathe B, the slidingplate 6, attached thereto and having recess 6' and stud a, engaging theslot in arm h, the block d, pivoted to said lathe and provided withfeelers, the shipper and rod or arm engaging therewith and provided witha projection, and means for engaging said projection and moving the rodor arm when block d falls into recess e, substantially as described.

FRED LAOEY.

Witnesses: v

E. VAN VOLKENBURGH, J12, WILLIAM FERGUSON.

